Viessmann boiler error x3
Viessmann Boilers Error Codes:
– Error x3: “Operating mode is not yet validated.”
– Error x7: “Efficiency below a required limit.”
Viessmann has been manufacturing boiler systems since 1883. A boiler system is a device that heats and supplies water to a building through a network of pipes. A boiler typically burns fuel, such as natural gas or oil, but can also burn wood or coal.
The error code x3 indicates that there is an issue with the circuit board for the combustion coil. The source of the problem is not environmental and will not be fixed by cleaning or replacing components.
This error code x3 is commonly found on Viessmann boilers. It is not always easy to identify the problem without further investigation.
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